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E’Chappe Dance Arts hosts the two-hour class, which combines ballet with yoga.

Jean Chappe spent months traveling to Siberia by coach, boat, and sleigh, nursing his delicate instruments over every perilous bump, only to find the last vital stretch blocked by swollen rivers, the result of unusually heavy spring rains, which the locals were swift to blame on him after they saw him pointing strange instruments at the sky.

Chappe managed to escape with his life, but with no useful measurements.

On June 3, 1769, Chappe lucks out—perhaps his first and last brush with good fortune on this journey—and gets a clear day to make his observations of the Venus transit.

In December 1768 Chappe begins a 77-day transatlantic voyage onboard what he called “our little nutshell.”